基于STM32的具有倒计时功能的时钟设计与实现

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中图分类号：TH714 文献标志码：A 文章编号：2095-2945(2025)14-0142-05

Abstract:This paper mainly expounds the design principlesanddesign ideas of anelectronicclock based on STM32.The designprinciplemainlyintroducesthehardwarepart,includingtheRTCfunctionmodule,LCDscreendisplayprinciple,key workingprinciple，andtimer module.Thenitexpoundstheprogramdesignideaofanelectronicclockwithcountdownfunction, including thedesignofatimetiming module,atimedisplaymoduleandabutonmodule.Theexperimentalresultsof this scheme showthattheclock designedinthisscheme hasthefunctionof displaying themonth,month,hour,minuteandscond, andcounting down，andcanbeabletopressthebutontomodifythetimeandmodifythecountdowntime.Theplanis feasible,effective,easy to operate,and can meet people's daily life needs.

Keywords:STM32;clock;countdown;RTC;buttons

在日常生活中，时间对于每个人都非常重要，因此时钟在人们生活中扮演着十分重要的角色。（剩余7192字）